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Jost Bürgi and Antonius Eisenhoit: Armillary sphere with astronomical clock, made in 1585 in Kassel, now at Nordiska Museet in Stockholm. An armillary sphere (variations are known as spherical astrolabe, armilla, or armil) is a model of objects in the sky (on the celestial sphere), consisting of a spherical framework of rings, centered on Earth or the Sun, that represent lines of celestial ...
The Noyes Armillary Sphere is a bronze armillary sphere located in Meridian Hill Park, a 12-acre (4.9 ha) urban park in Washington, D.C. It was the fifth artwork installed in the park and was designed by sculptor C. Paul Jennewein, whose other works in the city include the Darlington Memorial Fountain and 57 sculptural elements at the Robert F. Kennedy Department of Justice Building.
Armillary sphere: model of objects in the sky consisting of a framework of rings; Astrarium: timepiece and astronomical prediction device; Astrolabe: astronomical instrument; Astronomical clock: clock with special mechanisms and dials to display astronomical information; Antikythera mechanism: ancient Greek analogue astronomical computer
Santucci's armillary sphere is a Ptolemaic armillary sphere at the Museo Galileo in Florence, the largest existing in the world. [ 1 ] Begun on March 4, 1588, and completed on May 6, 1593, this large armillary sphere was built under the supervision of Antonio Santucci at the request of Ferdinand I de' Medici .
Booklet “The Dutch 17th Century in Etchings” for the exhibition of Rembrandt at the United Nations by Museum Geelvinck Hinlopen Huis (with the project proposals by Maecenas World Patrimony Foundation ((www.maecenasworldpatrimony.org) “Contribute to the Cycle of Life – the restoration of the Armillary Sphere”, Geneva.
The clock has an armillary sphere with a diameter of 40 cm. The sphere is activated by a clockwork mechanism, designed to display the position of the heavens at any given time, as well as displaying the hours and marking their passage with a chiming bell. The device is no longer in working order. The clock is owned by Korea University Museum ...
An armillary sphere in a painting by Sandro Botticelli, c. 1480. Historian Oscar G. Darlington asserts that Gerbert's division by 60 degrees instead of 360 allowed the lateral lines of his sphere to equal to six degrees. [23] By this account, the polar circle on Gerbert's sphere was located at 54 degrees, several degrees off from the actual 66 ...
The earliest development of the armillary sphere in China goes back to the 1st century BCE, [23] as they were equipped with a primitive single-ring armillary instrument. This would have allowed them to measure the north polar distance (去極度, the Chinese form of declination) and measurement that gave the position in a hsiu (入宿度, the ...